/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

package Servlets;

import Beans.Ciudad;
import Beans.Habitacion;
import Beans.Hotel;
import Beans.Reserva;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Blob;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.LinkedList;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.UnavailableException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


public class ReservasHotel extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    Connection con;
    public void init() throws ServletException{
        try{
            Class.forName("com.mysql.jdbc.Driver").newInstance();
            con=DriverManager.getConnection("jdbc:mysql://localhost/Agencia","root","root");
        }
        catch(Exception ex){
            throw new UnavailableException("Error: "+ex.getMessage());
        }
    }
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        LinkedList<Reserva> listaResPorCiudad=new LinkedList<Reserva>();
        try{
                java.sql.CallableStatement cs=con.prepareCall("{call ReservasPorHotel(?)}");
                String c = request.getParameter("NomHotel");
                cs.setString(1, c);
                ResultSet rs=cs.executeQuery();
                if(rs.next()){
                     Reserva r = new Reserva();
                     r.setCantHuespedes(rs.getInt("CantHuespedes"));
                     r.setIdReserva(rs.getInt("IdReserva"));
                     Habitacion h = BuscarHabitacion(rs.getInt("IdHotel"),rs.getInt("NumHab"));
                     r.setNumHab(h);
                     r.setFechaEntrada(rs.getDate("FechaEntrada"));
                     r.setFechaSalida(rs.getDate("FechaSalida"));
                     r.setNumDoc(rs.getString("NumDoc"));
                   
                     listaResPorCiudad.add(r);
              }
                request.setAttribute("listaResPorHotel", listaResPorCiudad);
                RequestDispatcher dispatcher=request.getRequestDispatcher("MostrarRPorHotel.jsp");
                dispatcher.forward(request, response);
            }
            catch(SQLException ex){
                throw new UnavailableException("Error: "+ex.getMessage());
            }
           
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
 
    public Habitacion BuscarHabitacion(int idHotel, int numHab ) throws UnavailableException {
     try {            
            PreparedStatement cs= con.prepareStatement("SELECT * FROM Habitacion WHERE (IdHotel="+idHotel+") AND (Numero="+numHab+")");
            ResultSet rs = cs.executeQuery();
            Habitacion h =null;
            if(rs.next()){
                Hotel ho = BuscarHotel(idHotel); 
                h = new Habitacion(rs.getInt("Numero"),rs.getString("Tipo"),rs.getInt("Capacidad"),rs.getDouble("Precio"),ho);
              }    
        return h; 
     }
    catch (SQLException ex){
                throw new UnavailableException("Error unaviEx IOEx  :(" + ex.getMessage());
               
        }     
    }
    public Hotel BuscarHotel(int id) throws UnavailableException{
   
         try {            
                PreparedStatement cs= con.prepareStatement("SELECT * FROM Hotel WHERE IdHotel="+id);
                ResultSet rs = cs.executeQuery();
                 Hotel h=null;
              while(rs.next()){
                     h = new Hotel(rs.getString("Nombre"),rs.getInt("Clasificacion"),null,null);
                     h.setIdHotel(rs.getInt("IdHotel")); 
                     Blob blob=rs.getBlob("Foto");
                     if(blob!=null){
                     byte[] data=blob.getBytes(1, (int)blob.length());
                     h.setUnaFoto(data);
                     }
              }              
        return h;
        }
    catch (SQLException ex){
                throw new UnavailableException("Error unaviEx IOEx  :(" + ex.getMessage());
            }
    
    }
}
